Application

Combustible DUST Mitigation

Industrial dust collection systems have a high risk of explosions because they can hold a high concentration of suspended combustible dust in a confined space. If oxygen is present and there is an ignition source an explosion can happen.

Dust collectors and vacuum systems are now required to comply with National Fire Protection Association (NFPA) standards and codes that protect facilities against fires and explosion risks. Although these standards are not law, they are being aggressively enforced by OSHA and also by many insurance companies.

3B Air Systems complies with safety standards to ensure the wellbeing of both our workers and yours. We understand and consider the risks of this industry while designing and installing our combustible dust solutions. Our experienced professionals work with trusted vendors to provide companies with the safest, most efficient systems possible.

Relevant terms to know regarding combustible dust:

Kst – the dust deflagration index, measures the relative explosion severity compared to other dusts. The larger the value for Kst, the more severe the explosion.
MEC – the minimum explosible concentration, which measures the minimum amount of dust dispersed in air required to spread an explosion.
MIE – the minimum ignition energy, which predicts the ease and likelihood of ignition of a dispersed dust cloud.
PMax – maximum achievable pressure generated during a dust explosion event.

So how do you know if your dust is combustible and what to do if it is?

Have a reputable 3rd party test your dust to determine a Kst value. Many testing agencies will have a simple, low cost option to first determine if the dust is combustible (Yes or No) – if test result is yes, you can then contract with them to provide a more in depth testing regimen to determine the actual values for Kst, PMax, MEC, MIE, etc.
OSHA mandates that if your dust has a Kst greater than 0 then you have a combustible dust – according to NFPA 652 standard you must then perform a Dust Hazard Analyis (DHA) in order to determine the potential combustion risks for dust produced or handled in your facility. Note that the deadline for the completion of a DHA has been extended from October, 2018 to September 7, 2020.
Consult with a reputable industrial air filtration specialist to determine the best course of action in mitigating your potential combustible dust application.

3B Air Systems can review your application and assist you in ensuring that your industrial combustible dust solution(s) will comply with NFPA standards and ensuring that your facility is operating in a safe and responsible manner.

Get in touch today to request a quote or discuss our NFPA combustible dust collection systems.